database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

Bug#36326: nested transaction and select

Browse Source 
The problem is that the query cache stores packets containing
the server status of the time when the cached statement was run.
This might lead to a wrong transaction status in the client side
if a statement is cached during a transaction and is later served
outside a transaction context (and vice-versa).

The solution is to take into account the transaction status when
storing in and serving from the query cache.
This commit is contained in:
Davi Arnaut
2009-01-13 20:07:06 -02:00
parent 2048bd7117
commit 918a038165
6 changed files with 158 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
tests/mysql_client_test.c
View File

@ -16354,6 +16354,63 @@ static void test_bug40365(void)
DBUG_VOID_RETURN;
}
/**
Bug#36326: nested transaction and select
*/
#ifdef HAVE_QUERY_CACHE
static void test_bug36326()
{
int rc;
DBUG_ENTER("test_bug36326");
myheader("test_bug36326");
rc= mysql_autocommit(mysql, TRUE);
myquery(rc);
rc= mysql_query(mysql, "DROP TABLE IF EXISTS t1");
myquery(rc);
rc= mysql_query(mysql, "CREATE TABLE t1 (a INTEGER)");
myquery(rc);
rc= mysql_query(mysql, "INSERT INTO t1 VALUES (1)");
myquery(rc);
rc= mysql_query(mysql, "SET GLOBAL query_cache_type = 1");
myquery(rc);
rc= mysql_query(mysql, "SET GLOBAL query_cache_size = 1048576");
myquery(rc);
DIE_UNLESS(!(mysql->server_status & SERVER_STATUS_IN_TRANS));
DIE_UNLESS(mysql->server_status & SERVER_STATUS_AUTOCOMMIT);
rc= mysql_query(mysql, "BEGIN");
myquery(rc);
DIE_UNLESS(mysql->server_status & SERVER_STATUS_IN_TRANS);
rc= mysql_query(mysql, "SELECT * FROM t1");
myquery(rc);
rc= my_process_result(mysql);
DIE_UNLESS(rc == 1);
rc= mysql_rollback(mysql);
myquery(rc);
rc= mysql_query(mysql, "ROLLBACK");
myquery(rc);
DIE_UNLESS(!(mysql->server_status & SERVER_STATUS_IN_TRANS));
rc= mysql_query(mysql, "SELECT * FROM t1");
myquery(rc);
DIE_UNLESS(!(mysql->server_status & SERVER_STATUS_IN_TRANS));
rc= my_process_result(mysql);
DIE_UNLESS(rc == 1);
rc= mysql_query(mysql, "DROP TABLE t1");
myquery(rc);
rc= mysql_query(mysql, "SET GLOBAL query_cache_size = 0");
myquery(rc);
DBUG_VOID_RETURN;
}
#endif
/*
Read and parse arguments and MySQL options from my.cnf
*/
@ -16652,6 +16709,9 @@ static struct my_tests_st my_tests[]= {
{ "test_bug40365", test_bug40365 },
#ifdef HAVE_SPATIAL
{ "test_bug37956", test_bug37956 },
#endif
#ifdef HAVE_QUERY_CACHE
{ "test_bug36326", test_bug36326 },
#endif
{ 0, 0 }
};